Earlier this week I had trouble trying to log into my account. Fortunatly after a very short waiting period, a member of the CHstaff reseted/changed my password so I could log in again. Naturally, I changed my password but when I tried to log in again I couldnt gain access. When I let CH send myself an email containing my password, I found out that every charakter after the 15th charakter was cut off.
So maybe it would be a good idea to mention the limitations of your password and forbidden special charakters on the registration form, aswell as the password change option menu.
I've updated the hint text on both pages.